The 5' 11, 245-pound Williams serves as a perfect sparring partner for Klitschko, whose Apr. 26 opponent stands 6' 0" and weighs 245-pounds. Williams, who has fought twice before in Germany, losing decisions to Manuel Charr and former world champion Ruslan Chagaev, has sparred twice with Wladimir and six other times with Klitschko's brother, recently retired world champion Vitali.

"Based on their (Klitschko brothers) sizes, around 6' 6"," Williams explained, "I give them a contrast in style when they're fighting much shorter guys. I'm aggressive and stay low, so they work on angles to throws shots. I try to slip and jab to get inside against taller opponents. Wladimir is a decent, intelligent, laidback type guy. Outside of the ring he's reserved. As a fighter, he's a good technician and hard worker in the gym.

"Germany has been very good to me. In most of my European exploits, I've been embraced because they love my Bahamian flavor. They hear me start talking and I bring them happy feelings. I put a beating on Chageav over there, from pillar to post, and the fans ended-up behind me. I have built a solid, steady fan-base in Germany and I've been well received since my first trip there. I'm no stranger in Germany and those people know and like 'Tank' Williams very well."

The 22-year-old Parker is 20 years Williams' junior. He is a 6' 4", 230-pound Samoan who has fought only one opponent of note, an aging Frans Botha, who Parker stopped in the second round of their 2013 fight in New Zealand.

"He seems talented from the little I know," Williams admitted. "I had never heard of him before I was offered this fight. He's been pushed in New Zealand and Australia, on the fast track but he has never fought anybody like me. There's nothing he can do that I haven't seen before and I'm used to being the shorter guy. A lot of guys can talk the talk but we'll find out if he can walk the walk. I'm bringing my 'Conch' punch (overhand right) and Parker is going to know he's been in a fight."

In addition to Charr and Chagaev, Williams has fought some of the best heavyweights in the world during the course of his 16 ½-year professional career, such as Evander Holyfield (NC3), Robert Helenius (LDEC10), Chauncy Welliver (WDEC12), Tye Fields (LDEC12), Taurus Sykes (LDEC10), Al Cole (WDEC10), Obed Sullivan (LDEC12), Jameel McCline (D10) and Robert Davis (LTKO5).

"This is a very exciting fight for Sherman," Williams' manager Si Stern added. "His experience will enable him to do very well against Parker. A victory can bring 'Tank' some excellent opportunities for some major fights around the world."

In 292 rounds fought, Williams has been knockout only one time, by Davis. His relatively short stature in height, especially for a heavyweight, has been detrimental over the years in terms of him landing high profile fights "I've been in the gym since October but it isn't easy for me to get fights," Williams noted. "I had fights lined up with David Price and Tyson Fury; they wouldn't fight me, saying I was too short. I guess they wouldn't have fought Joe Frazier, Mike Tyson or David Tua.

"The opportunity to fight this kid (Parker) came up. Hey, I'd fight anybody if the right opportunity comes up. This could spring me into something else. I always come to fight."